Article

Three new triterpenoids containing four-membered ring from the fruiting body of Ganoderma sinense.

State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650204, People's Republic of China.
Organic Letters (impact factor: 5.86). 03/2010; 12(8):1656-9. DOI:10.1021/ol100062b pp.1656-9
Source: PubMed

ABSTRACT Methyl ganosinensate A (1), ganosinensic acid A (1a), and ganosinensic acid B (2), three new triterpenoids with an unusual four-membered ring skeleton produced by a bond across C-1 to C-11, were isolated from the fruiting body of Ganoderma sinense . Their structures were established on the basis of extensive spectroscopic methods, including 1D and 2D NMR techniques, and methyl ganosinensate A was confirmed by X-ray crystallographic analysis.

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Keywords

2D NMR techniques
 
extensive spectroscopic methods
 
fruiting body
 
Ganoderma sinense
 
ganosinensic acid B
 
methyl ganosinensate
 
unusual four-membered ring skeleton
 

Cui-Fang Wang